Area and Perimeter Unit Test

Question

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Question
If the area of a circle is 28.26 cm2, what is the radius of the circle?(1 point)
cm

Answer 1

The formula for the area of a circle is A = πr^2, where A is the area and r is the radius.

Given that the area of the circle is 28.26 cm^2, we can set up the equation:

28.26 = πr^2

To solve for r, we need to divide both sides by π and then take the square root:

r = √(28.26/π)
r ≈ √(9)
r ≈ 3 cm

Therefore, the radius of the circle is 3 cm.